Middlings-purifier



2 sheetssheet 1.

(N0 Model.)

A.` L. BAUHARD. MIDDLINGS PURIPIBR.

Patented Dec. 6. 1892.

FIGA.-

oooooooooo No. 487,597. Patented Dec. 6, 1892.

mmmmmmmmmmmmmm' #j mm mmmmmmmmmmmmmmm UNITED STATES PATENT EEICE,

ALVIN L. BAUI-IARD, OF BRISTOL, TENNESSEE.

MlDDLlNGS-PURIFIER.

SPECIFICATION forming part of Letters Patent No. 487,597, dated December 6, 1892.

Application filed March 30, 1892. Serial No, 42 7,031- (No model.)

.To all, whom it may concern:

Be it known that I, ALVIN L. BAUHARD, a citizen of the United States, residing at Bristol, in the county of Sullivan and State of Tennessee, have invented a new and useful Middlings-Puritier, of which the following is a specification.

This invention relates to middlings-puritlers; and it has for its object to provide an improved machine of this character which, while constructed with comparatively few working parts and therefore capable of being run with small power, at the same ltime is so constructed as to utilize the same air over and over and to confine all the matter therein, so that the many disadvantages and inconveniences resulting from the use ot' dust-collectors and dust-rooms are avoided. The machine also provides for the thorough separation of the lighter middlings and Huff from the heavier grain to be separated.

Vith these and many other objects in view, which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

In the accompanying drawings, Figure l is a vertical sectional view of a middlings-purifier constructed in accordance with this invention. Fig. 2 is a horizontal sectional view of the same on the line 2 2 of Fig. 1. Figs. 3 and 4 are opposite end views showing the belt connections.

Referring to the accompanying drawings, A represents a suitable inclosing frame or casing, within which are located the various parts of the purifier. Within said casing are formed the opposite settling-chambers B and B', respectively, adjacent to the sides of the casing and within the same and partitioned by the inner Walls C from the large central collecting and settling chamber or Vcompartment D. The opposite chambers or compartments are also provided with the inclined bottoms b and b', respectively, which lead to the discharge-openings E and F, from which the settlings of the respective chambers may be spouted continuously or withdrawn when desired. The central larger chamber D is also provided with the converging inclined bottoms D', which terminate in a conveyerbox G in which revolves an ordinary screwcon veyer G', suitably geared with the other working parts of the machine and designed to carry the [lud and flour sett-ling in the chamber or bin D from without the machine. The opposite partition walls O terminate short of the upper a'ir and suction trunk H, through which the circulating air in the machine is primarily drawn. As stated, the said partition-walls C terminate short of the upper air or suction trunk H or at least the bottom h thereof, so that the several compartments may communicate with each other. The chambers B and D communicate directly with each other over the top ot' the partition-wall separating the same, while the opposite chamber B communicates with the central chamber D through the air-passage I, formed between one of the walls C and the depending wall I', extending from one end of the bottom h of the air or suction trunk downward into the chamber or compartment 13,50 as to cause the air passing from the intermediate chamberD to pass through the falling middlings and ascend therethrough before again finding its way into the upper air or suction trunk II. The bottom h of said air or suction trunk extends at one end only to the point at which the wall I depends therefrom,-and thus forms a suction-passage J between the upper end of the wall I and the inner side of the feeding-box K. The said feeding-box is provided with a cant bottom le, leading to the discharge-opening k', opening into said suction-passage, the draft from which into said air or suction trunk being controlled by the valve L, working over the upper en d of the suction-passage J, and by suitably controlling the same is designed to accurately regulate the draft of air through the middlings.

Within the feeding-box K is located the hopper IWI, having the bottom escape-opening m, within which works the feeding-roller N,

and over which is secured the swinging auto-V IOO means of the connecting -link o with the weighted controlling-lever o', pivoted at one end to said hopper, and which may be so adjusted as to accurately control the amount of grain carried from the hopper by the feedingroller and into the feedingbox. Located in the opposite end of the upper air or suction trunk opposite to the feeding devices is the fan-casing P, opening into said trunk and causing the middlingsladen air to be drawn therein by the revolving fan p revolving within the same. The said fan-casing is provided with an elongated discharge-spout Q, which projects a considerable distance into the chamber or compartment B', so that the middlings carried by the air through said spout may have an opportunity to settle and collect within said chamber or compartment, while the air and the [luft and Hour carried therewith passes over the top ofthe partitionwall into the central chamber or compartment and isdirected against the central bat'- fle-plate R, depending centrally within the large central collecting and settling chamber, into the bottom of which the tiui and iiour settles and is carried off by the conveyer G', while the unburdened air passes out of said air-passage I into the chamber B, from which it again finds escape to the upper-air and suction trunk, as indicated by the arrows.

A conveyer-box S extends across the bottom of the upper air or suction trunk Il and is designed to receive the second separation of middliugs collected and deflected therein by the valve T working thereover and suitably regulated. The middlings are carried from said box without the machine by the conveyer U working in said box S. It will be readily observed that the feeding-roller, the upper and lower conveyers, and the fan can be readily connected together, as illustrated in Figs. 3 and 4, by suitable belting, and driven bythe same power, so that the machine can be easily operated.

Without further detailing the course of the air-currents and the separations, which are readily apparent, it will be readily observed that there are four distinct separations. In the Iirst place the heavier middlings, unaffected but purified by the air passing therethrough from the passage I, fall to the bottom of the chamber B. The second separation is effected in the air or suction trunk by the valve T, and the separated matter falls into the conveyer-box S, while the third and fourth separations are effected in the chambers or compartments B and D, respectively, as will be readily noted.

The construction, operation, and many advantages of the herein-described middliugspurifier are thought to be apparent without further description.

Having thus described my invention, what Iclaim, and desire to secure by Letters Patent, is-

1. In a middlings-purifier, the combination, with the closed casing, of a series of collecting or settling chambers or compartments communicating with each other and arranged side by side, a horizontal closed air oi* stiotion trunk extending across the top of the casing above the upper open ends of the series of chambers or compartments and terminating short of the casing at one side to form a communicating passage with one end compartment of the series, and a fan located in said closed air or suction trunk and communicating therewith and provided with a depending spout discharging into the opposite end compartment of the series, substantially as set forth.

2. In a middlings-puriier, the combination, with the casing, of the vertical partition-walls within said casing, separating opposite side chambers and a central collecting and settling chamber, a horizontal closed air or suction trunk located in the top of said casing and having the bottom thereof above the upper ends ot' said Walls, a supplemental wall depending from one end of the bottom of said trunk adjacent to and parallel with one of said partition-walls to form an air-passage between the same and said wall, a feeding-box located within said casing opposite and above the supplemental Wall to form a suction-passage opening into one end of said trunk, a valve arranged at the upper end of said passage, and a fan located in and com-A municating with said trunk and having a spout depending into one of the side chambers, substantially as set forth.

3. In a middlings-purifier, the casing, opposite chambers or compartments within said casing, a larger intermediate chamber orcompartment communicating with each ot' said opposite compartments, a conveyer located in the bottom of said intermediate compartment, a closed air or suction trunk located in the top of the casing above said compartment or chamber and communicating with 011ev of said side compartments, a conveyer located in the bottom of said air or suction trunk, a valve working directly over said conveyer within the trunk and arranged to direct the lower portion of the current in the trunk into the conveyer, and a fan discharging from said air or suction trunk into the opposite side compartment, substantially as set fort-h.

4. A hopper having a bottom escape-opening, a feeding-roller working within said opening, a swinging feed-regulating door working over said opening and against said feed-roller, aweight-controlled lever pivoted to said hopper, and a link connected with said lever and said door, substantially as set fort-h.

In testimony that l claim the foregoing as my own I have hereto atxed my signature in the presence of two Witnesses.

ALVIN L. BAUHARD.

VtTitnesses:

O. S. TAYLOR, Rivas WALKER.

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